The ActiV Hi-Output range of conventional sounders and combined sounder visual alarm devices (VADs) are designed for use with C-TEC’s range of fire panels and other compatible third-party panels. However, compatibility testing with third-party panels is recommended to ensure correct operation. With a 100 dB(A) peak sound output @ 1 m, their purpose is to visually and audibly alert building occupants of a fire alarm. Units are supplied with either a shallow or deep base, in a red plastic enclosure.